Clock mechanism



March 19, 1935. METZLER 1,994,828

CLOCK MECHANI SM Filed Aug. 14, 1933 Patented Mar. 19, 1935 UNITED STATES PATENT OFFICE Application August 14,

2 Claims.

This invention relates to improvements in clock movements and especially to the verge and escapement wheel.

An important object of this invention is to prolong the life of clocks or any other instruments employing a verge and an escapement wheel.

A further object of this invention is to provide an adjustable verge and escapement wheel.

With the foregoing and other objects in view, as will hereinafter become apparent, this invention comprises the constructions, combinations, and arrangements of parts hereinafter set forth, claimed and illustrated in the accompanying drawing:

Fig. l is a front elevation of the invention shown somewhat diagrammatically.

Fig. 2 is a top plan view of the adjustable escapement wheel.

Fig. 3 is a sectional view taken on the line 33 of Fig. 2.

Fig. 4 is a bottom view of the adjustable verge.

Fig. 5 is a top plan view of the same.

Fig. 6 is a sectional view taken on the line 6-6 of Fig. 5.

In the drawing, wherein for the purpose of illustration is shown a preferred embodiment of my invention, the numeral '7 designates a shaft, 8 a mandrel having a slot 9. The mandrel 8 has a boss 10 which carries an escapement wheel 11, and the shaft '7 carries a set screw 12 which holds the mandrel 8 in place.

The numeral 13 designates a shaft of the verge having a flat surface 14 and an elongated slot 15 in the center at an angle to the flat surface 14.

The numeral 16 designates a verge having an oblong boss 17, which is slidable in elongated slot 15 when adjustments are necessary. The oblong boss 1'7 has a set screw 18 which holds the verge 16 in alinement with shaft 13.

The numerals 19 and 20 designate the parts of the verge 16 that cooperate with escapement wheel 11.

The numeral 21 designates the arm of the verge 16, 22 the pendulum and 23 the arm of the pendulum 22 that cooperates with the arm 21 of the verge 16.

The operation of the adjustable escapement wheel and verge is as follows:

It is a well known fact with the ordinary arrangements of clocks that the escapement wheel 1933, Serial No. 685,121

cooperating with the verge wears a pocket or channel in each end of the verge. When this channel reaches a certain depth the clock will not operate. The only remedy, then, would be to apply a new verge.

With this invention, however, the wearing of the channel in the verge as at 19 and 20 is avoided by adjusting the verge 16 relative to the escapement wheel 11. This can be done either by shifting the verge 16 along the shaft 13 or by shifting the wheel 11 through moving the mandrel 8 over the shaft '7. Obviously, either or both adjustments may be made, it being only necessary to adjust the verge and escapement wheel relative to each other. By so adjusting the one relative to the other, the life of these elements is greatly prolonged, thus greatly prolonging the life of the clock or other mechanism with which it is being used.

The novel features and the operation of this device will be apparent from the foregoing description. While the device has been shown and the structure described in detail, it is obvious that this is not to be considered limited to the exact form disclosed and that any changes may be made therein within the scope of what is claimed without departing from the spirit of this invention.

Having thus set forth and disclosed the nature of this invention, what is claimed is:

1. In a clock mechanism, an escapement wheel, a verge, means for mounting said escapement wheel for adjustment transverse of its plane of rotation, said means comprising an escapement wheel shaft, a mandrel on said shaft, said escapement wheel being mounted on said mandrel, a slot in said mandrel, and a screw extending through said slot into said mandrel into said shaft adjustably securing said mandrel on said shaft.

2. In a clock mechanism, an escapement wheel and a verge, and means for mounting said verge for adjustment relatively transverse of the plane of said escapement wheel, said means comprising a verge shaft, a slot longitudinally of said shaft, a screw passing through said slot into said verge whereby said verge may be shifted along said slot and adjustably secured to said shaft by said screw.

SYLVESTER F. NIETZLER. 

